As for Olmo specifically, Giuseppe Olmo was a racer in the early days (1920's) and founded Olmo Biciclette in the 30's or so...... The good stuff from the 50's and 60's, I'm told, is comparable to any of the high quality bikes from that period....and do command collector prices. I have seen later examples though for much less money. I like the earlier models with fancy lugwork for sure !

Joe